2021 GLE 350 code P0191
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2021 GLE 350 code P0191
Hi All............wife's 2021 GLE 350 just threw a check engine light with code P0191. Car is in limp mode. That code references a Fuel Rail Pressure Sensor fault. Anyone have experience with this before? Any help is appreciated.
Thanks
David
Thanks
David
Thread Starter
Newbie
Joined: Jan 2026
Posts: 6
Likes: 0
Researching this a bit further today, I can find a part # for a Fuel Pressure Sensor that sits on top of the Fuel Pump, but cant find anything about a sensor on the fuel rails. Very little info available for this particular model. A couple of follow up questions:
1) is anyone aware of a fuel pressure sensor on the fuel rails? If so, do you know the part # and location?
2) how accessible is the fuel pump? Ive seen several other MB models have the pump under the rear seat. Does the same apply here?
Im more of a DIY guy, so would like to replace the sensor myself if possible vs taking it to the dealer. The sensor is only $60.
Thanks in advance for your help.
David
1) is anyone aware of a fuel pressure sensor on the fuel rails? If so, do you know the part # and location?
2) how accessible is the fuel pump? Ive seen several other MB models have the pump under the rear seat. Does the same apply here?
Im more of a DIY guy, so would like to replace the sensor myself if possible vs taking it to the dealer. The sensor is only $60.
Thanks in advance for your help.
David
